Machine for finishing the toe and insole of lasts



Deco 8, 1925 v I I,564-,523

W. J. BURKE ET AL MACHINE FOR FINISHING THE TOE AND INSOLE OF LASTSFiled Jan. 10, 1923 llllll m! I i/[MIMI a l T 4 BY ZI I A TTOR/VE Y5Patented Dec. 8, 1925.

WILLIAM J'. BURKE AND HEKRY G. CLAUSING, OF PORTSMOUTH, OHIO.

MACHINE FOR FINISHING THE TOE AND INSOLE'OF LASTS.

\ Application filed January V10, 1923. Serial no. 61d,835.

To all whom it may Be it known that we, WILLIAM J. BURKE and HENRY G.CLAUSING, citizens of the type of last finishing latter there .Toe andInsole of Lasts,

or holders,

'toe,

United States, and residents of the city of Portsmouth, county ofScioto, and State of Ohi0, have invented certain new and usefulImprovements in Machines for Finishing the of which the following is aspecification.

ur invention relates to an improvement in machines for finishing lasts,and an object thereof is the provision of an improved machine forfinishing" the toe and insole of lasts particularly lasts of the hingedtype, where in the last and a model are held in chucks the chuckengaging the last between the breaking point of the last and the and insuch a way as to enable the toe and the position of the last in thefinishing operation.

It will be appreciated by those skilled in this art that a machine ofthe type above referred to is of material advantage in the finishing oflasts as compared with the usual machine, particularly when finishinghinged lasts, in view of the fact thatjn the present machine the last ischucked prior last finishing machines chuck the last at the toe andheel. In the former case the last is. held rigidly in place, while inthe is always more or less yield or give to the last owing to the hingeor joint.

Referring to the accompanying draw- I a i f r i Fig. 1' shows anembodiment of our invention in plan,-

Fig. 2 is a section taken substantially on the line 2-2 of Fig. 1; 3

Fig. 3 is a section of the improved chuck shown in Fig. 2, the sectionbeing taken substantially on the line 33 of'Fig. 1;

Figs. 4 and 5 are modified forms of hold- 1n position on the chuck.

Referring to ing devices for holding the last and model the drawings indetail,-1

designates a chucks upporting rod which is. (not shown) to permit of therod being oscillated.

suspended from. .hangers On the chuek-supporting rod we mount a chuck 2provided for the purpose of holding a last to befini'shed and a modellast to be du Heated.

- e chuck comprises a bed plate 3 adapted respect to the bed insole tobe finished withoutchanging" the chuck during between the hinge and toewhereas evenly upon and insole line.

to be rotated oroseillated upon the rod 1 and also to be moved axiallythereof. The bed plate is bifurcated at its. front end to 'prov1deprojections 4 and 5 each of. which carries a vertically ing upwardlyfrom the face of the projections', these pins providing a support forthe toe of the last tobe finished and for the toe of the model, the pinsengaging the under side of boththe last and model.

Slidably mounted on the bed plate 3 is a plate 7 adapted to be movedendwise with plate, this plate also being bifurcated to provideextensions 8 and 9' corresponding to the, projections and 5 T0 abovereferred to. The extcnsidn 8 carries a pair of pins 10 and 11 extendingupwardly from the face thereof while the projection 9 carries a pair ofsimilar pins .12 and 13.

The pins 10 and 11, are adapted to engage jection 5 is provided with asimilar rod 15 7 each of these .rods being provided with a e wood screwthread to enable them to be screwed into the bottom of the last andmodel. The rods 1st and 15 are preferably positioned centrallywithrespect to the pins I 6, 10, 11 and 6, 12,13 to ensure that the lastand model will be pulled or drawn down held fixedly against thesupporting pins. 1 In operation and 6, 12 and rods Hand 15 screwed intothe bottoms of the last and model to draw the samefirml upon theirrespective pins. The chuck is then manipulated to; bring the toe and inii into engagement witha 1.

sole of the model v guide wheel 17 and to at the same bring the enablethe last to-be duplicate the model.

-r e the upporting pins for extending pin 6 project- 80 i plate 3carrying with it the so i the bottoms of the-last to be finished and themodel are spotted to accord with the location of the. pins 6, 10 and 1 113 relative tothe toe and one The .last and model are then placed inposition upon these pins and the the last and model as Well as the rods14 and all engage the last and model on the under side which permits thefinishing of both the toe and insole of. the last and as previouslypointed out by merely sliding i the last is necessarily held rigidlythroughout the finishing operation.

lln Fig. 4 we have modified the construction of the rods 1a and 15 bywhich the last to be finished and the model last are drawn.

down in place upon their respective supporting pins. lFrom this figureit will be seen that we provide pins.18 which project through thei'aceof the projections 4: and 5 of the bed plate 3 these pins at theirupper ends being provided with an offset 19 adapted to engage the wallsof an opening 20 in the under side of the last to be finished and themodel last. The pins are held against longitudinal movement in the bedplate 3 by the members 21 and 22. When the last to be finished and themodellast are placed in position upon the chuck the pins 18 will enterthe openings 20 in the last and model and may then be given a par tialrotation to bring the offset 19 into firm engagement with the wall ofthe opening 20 so as to hold the last and model against movement ontheir supporting pins.

111 Fig. 5 we have provided another modification of the pins 14 and 15.lin this form of our invention the bed plate 3 is provided with upwardlyprojecting pins 23 corresponding to the pins 14 and 15 of Fig. 1 and thelast to be finished and the model I last are each provided with a splitbushing 24 the peripheries of which are provided with projections 25 ortheir equivalent so as to hold the bushings in place in the last andmodel. When the last and model are placed in position in the chuck therods 23 are screwed into the bushings 2% to draw the last and modelfirmly down upon their respective supporting pins the bushings exmenacepanding under this operation so as to not be drawn out of the last andmodel.

We claim:

1. ln combination a chuck, a support carried thereby for supporting alast block on the chuck, adjustable supports, said adjustable supportsbeing adjustable relative to the first mentioned support to adapt thechuck for last blocks of difierent sizes, and a securing member adaptedto engage the underside of the last to hold the same in place upon saidsupports.

Y 2. In a machine for finishing lasts, a rod, a bed plate slidablymounted thereon, a last support carried by said bed plate, a plateslidably mounted on said bed plate, last supports carried thereby, and ascrew carried by said bed plate and adapted to draw a last into rigidengagement with said last supports.

3. lln a last finishing machine, a chuck for holding a last to befinished, said chuck comprising a bed plate, a last support mounted onand extending upwardly from the forward end of said bed plate, a plateadjust-ably mounted upon said bed plate, a pair of last supports mountedon and entending upwardly from the face of the lastmentioned plate and ascrew carried by said bed plate and held against axial movement therein,said screw being adapted to screw into the bottom of the last to befinished to draw the same into rigid engagement with said last supports.

4:- ln a machine for finishing the toe and insole of a last, a chuck forholding a last to be finished, supporting pins carried by said chuck andupon which a last to he finished is supported one of said pins beingadjustable to vary the distance between the pins, and a rod carried bysaid chuck to be screwed into the last to draw the same firmly intoengagement with the supporting pins, said pins and rodengaging the laston the under side thereof to permit the toe and insole to be finishedwithout resetting the last in said chuck.

'lhis specification signed this 30 day of Dec, 1922.

WILLIAM J. BURKE. HENRY G. GLAUSlNG.

